I heard " she is on the button." last night. What does it mean?

来源: HXXH 于 2009-05-17 00:00:18 [] [旧帖] [给我悄悄话] 阅读数 : (227 bytes)

When I watched Eurovision last night, somebody asked about our singer. The answer he got is: " She is on the button."
What does it mean?

I would't notice this if I had not have read your artical.

Thank you.

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